#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<math.h>
#include<ctype.h>
#include<time.h>
int add(int x,int y)
{
    return x+y;
}

int main()
{
    int x,y;
    while(EOF!=scanf("%d%d",&x,&y))
    {
        printf("%d\n",add(x,y));
    }
    return EXIT_SUCCESS;
}
